▎ 摘　　要

NOVELTY - The exchanger has a primary loop (14) and a secondary loop (8) that are arranged in parallel. The primary loop and the secondary loop are used for forming four different medium combinations to respectively exchange heat with tube side media with different temperature grades, and four different medium combinations comprises first medium that is introduced into the primary loop and not introduced into the secondary loop. The first medium is introduced into the primary loop, and second medium is introduced into the secondary loop. The first media are introduced into the primary loop and the secondary loop. The second media are introduced into the primary loop and the secondary loop. A tube side comprises a tube bundle formed by arranging multiple single tubes (13), and the single tubes are divided into three types following heat exchange with the primary loop, heat exchange with the secondary loop, and heat exchange with the primary loop and the secondary loop simultaneously. USE - Air smart heat exchanger for gallium water. Can also be used as dividing wall type heat exchanger, heat accumulating type heat exchanger, fluid connection indirect heat exchanger, direct contact type heat exchanger, compound heat exchanger, heater, preheater, superheater and evaporator. ADVANTAGE - The housing side realizes the combination of four media, meets the heat exchange with the tube side media with different temperature grades, and can reasonably configure the media types and the flow of the tube side media so as to improve the heat exchange efficiency and the heat exchange effect to the maximum extent. Two loops on the housing side are provided with a primary loop and secondary loop, so that the inlet end effect of convection heat exchange is fully exerted, and the heat exchange performance is improved. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic diagram of the air smart heat exchanger. Tube side inlet (1) Tube side outlet (4) Inner housing (6) Fixing tube plate (7) Secondary loop (8) Outer housing (9) Floating head (10) Floating tube plate (11) Pipe box (12) Single tube (13) Primary loop (14)